Climate guide for Asuncion, Paraguay

Best Time to Visit
Asuncion

How to read the score (0–10)
05810
UnfavorableGoodOptimal
01 · Paraguay

About Asuncion

Asunción is the most useful starting point for understanding Paraguay beyond its border-shopping routes. The historic center, Palacio de los López area, railway heritage, waterfront, markets, museums, and restaurant neighborhoods fit into a flexible urban itinerary, although heat and uneven sidewalks make short distances slower than they look. Use the city as a base for day trips toward nearby cultural and natural sites rather than trying to cover the whole country from one hotel. Check museum hours, use reputable taxis or ride services, and take normal care in quiet central streets after dark.

02

Did you know?

03

Travel Tips

01Best time & timing
July leads the year at 8.7/10, with August and September close behind — January (4.7/10) is the one to avoid without a specific reason.
02Weather & what to pack
In July plan for about 18°C; the month brings 63 mm of rain. Pack layers you can shed by midday plus one warm layer for the evening.
03Crowds & value
Crowds build in July and rates follow; May usually pairs good conditions (7.4/10) with the lowest prices of the strong months.

Things to do in Asuncion

Asuncion, Paraguay. Live activities and tours from GetYourGuide, matched to this destination.

When to visit Asuncion: the short answer

Plan Asuncion for July, with August, September close behind — the stretch with the most usable temperatures and the fewest lost days to rain: July averages 18°C with 63 mm of rain and about 27 days with 6+ hours of sunshine. The months to avoid unless you have a specific reason are January, December. If budget matters more than perfect weather, October is the strongest of the low-rate months at 6.4/10.

Across the year Asuncion swings from 18°C in June to 29°C in January, a 11-degree spread, while rainfall ranges from 63 mm in July to 194 mm in October. In short, Asuncion is not equally good year-round — the gap between its best and worst month is 4 points on the same 10-point scale.

Warmest month: January (29°C). Coolest: June (18°C). Driest: July (63 mm). Wettest: October (194 mm).

Asuncion month by month

January in Asuncion — the hardest end of the year

Hardest · 4.7/10

Days in January average 29°C (84°F) — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

148 mm of rain makes this a wet month here, though with about 30 days with 6+ hours of sunshine there is still bright weather between the fronts.

That is 4.7/10 on the same scale — 12th of 12 months, versus 8.7/10 for the best month here.

Expect low-season pricing, and crowds are light for this destination.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

If your dates are flexible, July is materially better in Asuncion — 4 points higher on the same scale.

February in Asuncion — workable with trade-offs

Trade-offs · 6/10

Days in February average 28°C (83°F) — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

Budget for roughly 90 mm of rain this month — a flexible day or two helps — with about 27 days with 6+ hours of sunshine and 12.9 hours of daylight to work around it.

That is 6/10 on the same scale — 8th of 12 months, versus 8.7/10 for the best month here.

Budget for low-season pricing, and crowds are light for this destination.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a packable rain layer.

If your dates are flexible, July is materially better in Asuncion — 2.7 points higher on the same scale.

March in Asuncion: mixed conditions, plan around the weather

Trade-offs · 5.8/10

March averages 27°C (80°F) and humidity near 70%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Monthly rainfall reaches 116 mm — wet for this destination — but about 28 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.

It scores 5.8/10 here, 9th of 12 months, against 8.7/10 in the destination's best month.

Figure on low-season pricing, with crowds are light for this destination.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

Flexible dates? July scores 2.9 points higher here — enough to change the trip.

April in Asuncion: mixed conditions, plan around the weather

Trade-offs · 6.4/10

At 23°C (74°F) this is comfortable city weather in April, with sightseeing easiest before lunch and after the afternoon peak.

168 mm of rain makes this a wet month here, though with about 26 days with 6+ hours of sunshine there is still bright weather between the fronts.

That is 6.4/10 on the same scale — 6th of 12 months, versus 8.7/10 for the best month here.

Budget for mid-season pricing, and crowds are moderate.

Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella.

If your dates are flexible, July is materially better in Asuncion — 2.3 points higher on the same scale.

May in Asuncion — reliably good (4th best month)

Good · 7.4/10

May averages 20°C (67°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.

Monthly rainfall reaches 119 mm — wet for this destination — but about 24 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.

It scores 7.4/10 here, 4th of 12 months, against 8.7/10 in the destination's best month.

Plan for mid-season pricing, with crowds are moderate.

Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella.

June in Asuncion: strong conditions, 5th of 12

Good · 7.3/10

Temperatures hover around 18°C (64°F) — the kind of month where neither heat nor cold forces the schedule.

124 mm of rain makes this a wet month here, though with about 22 days with 6+ hours of sunshine there is still bright weather between the fronts.

That is 7.3/10 on the same scale — 5th of 12 months, versus 8.7/10 for the best month here.

Expect mid-season pricing, and crowds are moderate.

Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.

July in Asuncion tops the year's climate scores

Best window · 8.7/10

Temperatures hover around 18°C (65°F) — the kind of month where neither heat nor cold forces the schedule.

Budget for roughly 63 mm of rain this month — a flexible day or two helps — with about 27 days with 6+ hours of sunshine and 10.7 hours of daylight to work around it.

On our climate-comfort scale this is the top-ranked month of the year for Asuncion at 8.7/10 — the reference point every other month on this page is measured against.

Budget for peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.

August is one of the strongest months in Asuncion (2nd)

Best window · 8.5/10

August averages 20°C (68°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.

Rainfall runs 77 mm, so plan one flexible day in three; you still get about 26 days with 6+ hours of sunshine and 11.3 hours of daylight.

A 8.5/10 puts this among the year's best months in Asuncion (2nd of 12); only July scores higher, at 8.7/10.

Figure on peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack light clothing, a hat and real sun protection, a packable rain layer.

September in Asuncion: strong conditions, 3rd of 12

Good · 8.1/10

September averages 22°C (72°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.

Rainfall runs 95 mm, so plan one flexible day in three; you still get about 25 days with 6+ hours of sunshine and 12 hours of daylight.

It scores 8.1/10 here, 3rd of 12 months, against 8.7/10 in the destination's best month.

Figure on mid-season pricing, with crowds are moderate.

Pack light clothing, a hat and real sun protection, a packable rain layer.

October in Asuncion: mixed conditions, plan around the weather

Trade-offs · 6.4/10

At 24°C (74°F) this is comfortable city weather in October, with sightseeing easiest before lunch and after the afternoon peak.

194 mm of rain makes this a wet month here, though with about 25 days with 6+ hours of sunshine there is still bright weather between the fronts.

That is 6.4/10 on the same scale — 7th of 12 months, versus 8.7/10 for the best month here.

Budget for low-season pricing, and crowds are light for this destination.

Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella.

If your dates are flexible, July is materially better in Asuncion — 2.3 points higher on the same scale.

November in Asuncion — middling scores, decent value

Trade-offs · 5.8/10

At 26°C (78°F) this is comfortable city weather in November, with sightseeing easiest before lunch and after the afternoon peak.

169 mm of rain makes this a wet month here, though with about 26 days with 6+ hours of sunshine there is still bright weather between the fronts.

That is 5.8/10 on the same scale — 10th of 12 months, versus 8.7/10 for the best month here.

Budget for low-season pricing, and crowds are light for this destination.

Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella.

If your dates are flexible, July is materially better in Asuncion — 2.9 points higher on the same scale.

December in Asuncion — middling scores, decent value

Trade-offs · 5/10

December averages 28°C (82°F), so the practical pattern is early mornings, a long midday break, and evenings back outside.

Monthly rainfall reaches 170 mm — wet for this destination — but about 28 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.

It scores 5/10 here, 11th of 12 months, against 8.7/10 in the destination's best month.

Plan for low-season pricing, with crowds are light for this destination.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.

Flexible dates? July scores 3.7 points higher here — enough to change the trip.

FAQ

Frequently asked

When is the best time to visit Asuncion, Paraguay?
In Ideal Weather mode, the best months to visit Asuncion are July, August, September. July is the single peak month with an Ideal Weather score of 8.7/10 based on temperature, rainfall, humidity, daylight and days with 6+ hours of sunshine.
What is the weather like in Asuncion year-round?
Asuncion has a climate profile suited to sightseeing and cultural travel. Average monthly temperatures range from 18°C in June to 29°C in January, with Ideal Weather scores between 4.7 and 8.7 out of 10.
Which months should I avoid in Asuncion?
The lowest Ideal Weather-scoring months in Asuncion are January (4.7/10), December (5.0/10), March (5.8/10). These months typically combine less comfortable temperatures, higher rainfall or fewer days with 6+ hours of sunshine.
When is the rainy season in Asuncion?
October is the wettest month in Asuncion, averaging about 194 mm of rainfall. July is the driest, at roughly 63 mm.
Which is the sunniest month in Asuncion?
January sees the most sun in Asuncion, with about 30 days with 6+ hours of sunshine on average - ideal for outdoor plans.
Is Asuncion a good destination for sightseeing and cultural travel?
Asuncion is well suited to sightseeing and cultural travel. Its highest Ideal Weather window (July, August, September) aligns with the conditions travelers usually look for in this style of trip.
How is the bestime.to score for Asuncion calculated?
Each month receives an Ideal Weather score from 0-10 using ERA5 climate normals for Asuncion: temperature comfort, precipitation, humidity, daylight hours, and days with 6+ hours of sunshine - weighted for sightseeing and cultural travel.

Climate data: Open-Meteo ERA5 historical archive, the five most recent complete years (2021–2025). Scores are monthly averages for that window, not forecasts, and short-window precipitation can differ from longer-term normals. “Sunny days” count days with at least 6 hours of measured sunshine — they are not dry days.

12

Explore by month

Curated in Asuncion

Tickets & experiences